Signalling and mapping of Measurement Reports
Field of the Invention
The present invention relates to indicating and identifying different versions of uplink
measurement reports. Methods are presented to distinguish such reports so that the
receiver can know which measurement report type has been sent. The invention is
applicable in the field of communication between a transmitter and a receiver. It is
particularly related to communication systems where a receiver sends feedback information
to the transmitter, where the feedback contains different information about the
communication channel condition experienced by the receiver and the transmitter needs to
distinguish between several such reports of different content.
Background of the Invention
Third-generation mobile systems (3G) based on WCDMA radio-access technology are being
deployed on a broad scale all around the world. A first step in enhancing or evolving this
technology entails introducing High-Speed Downlink Packet Access (HSDPA) and an
enhanced uplink, also referred to as High Speed Uplink Packet Access (HSUPA), giving a
radio-access technology that is highly competitive.
However, knowing that user and operator requirements and expectations will continue to
evolve, the 3GPP has begun considering the next major step or evolution of the 3G standard
to ensure the long-term competitiveness of 3G. The 3GPP launched a Study Item "Evolved
UTRA and UTRAN" (E-UTRA and E- UTRAN). The study will investigate means of achieving
major leaps in performance in order to improve service provisioning and reduce user and
operator costs.
It is generally assumed that there will be a convergence toward the use of Internet Protocols
(IP), and all future services will be carried on top of IP. Therefore, the focus of the evolution
is on enhancements to the packet-switched (PS) domain.
The main objectives of the evolution are to further improve service provisioning and reduce
user and operator costs as already mentioned.
More specifically, some key performance and capability targets for the long-term evolution
are:
Significantly higher data rates compared to HSDPA and HSUPA: envisioned target
peak data rates of more than 100Mbps over the downlink and 50Mbps over the
uplink
Improved coverage: high data rates with wide-area coverage
Significantly reduced latency in the user plane in the interest of improving the
performance of higher layer protocols (for example, TCP) as well as reducing the
delay associated with control plane procedures (for instance, session setup)
Greater system capacity: threefold capacity compared to current standards.
One other key requirement of the long-term evolution is to allow for a smooth migration to
these technologies.
The ability to provide high bit rates is a key measure for LTE. Multiple parallel data stream
transmission to a single terminal, using multiple-input-multiple-output (MIMO) techniques, is
one important component to reach this. Larger transmission bandwidth and at the same time
flexible spectrum allocation are other pieces to consider when deciding what radio access
technique to use.
The choice of adaptive multi-layer Orthogonal Frequency Division Multiplexing (AML-OFDM)
in downlink will not only facilitate to operate at different bandwidths in general but also large
bandwidths for high data rates in particular. Varying spectrum allocations, ranging from 1.25
MHz to 20 MHz, are supported by allocating corresponding numbers of AML-OFDM sub-
carriers. Operation in both paired and unpaired spectrum is possible as both time-division
and frequency-division duplex is supported by AML-OFDM.
OFDM with Orthogonal Frequency Domain Adaptation
The AML-OFDM-based downlink has a frequency structure based on a large number of
individual sub-carriers with a spacing of 15 kHz. This frequency granularity facilitates to
implement dual-mode UTRA/E-UTRA terminals. The ability to reach high bit rates is highly
dependent on short delays in the system and a prerequisite for this is short sub-frame
duration. Consequently, the LTE sub-frame duration is set as short as 1 ms in order to
minimize the radio-interface latency. In order to handle different delay spreads and
corresponding cell sizes with a modest overhead, the OFDM cyclic prefix length can assume
two different values. The shorter 4.7 ms cyclic prefix is enough to handle the delay spread
for most unicast scenarios. With the longer cyclic prefix of 16.7 ms, very large cells, up to
and exceeding 120 km cell radius, with large amounts of time dispersion can be handled. In
this case, the length is extended by reducing the number of OFDM symbols in a sub-frame.
The basic principle of Orthogonal Frequency Division Multiplexing (OFDM) is to split the
frequency band into a number of narrowband channels. Therefore, OFDM allows
transmitting data on relatively flat parallel channels (sub-carriers) even if the channel of the
whole frequency band is frequency selective due to a multipath environment. Since the sub-
carriers experience different channel states, the capacities of the sub-carriers vary and
permit a transmission on each sub-carrier with a distinct data-rate. Hence, sub-carrier wise
(frequency domain) Link Adaptation (LA) by means of Adaptive Modulation and Coding
(AMC) increases the radio efficiency by transmitting different data-rates over the sub-
carriers. OFDMA allows multiple users to transmit simultaneously on the different sub-
carriers per OFDM symbol. Since the probability that all users experience a deep fade in a
particular sub-carrier is very low, it can be assured that sub-carriers are assigned to the
users who see good channel gains on the corresponding sub-carriers.
Two different resource allocation methods can be distinguished upon when considering a
radio access scheme that distributes available frequency spectrum among different users as
in OFDMA. The first allocation mode or "localized mode" tries to benefit fully from frequency
scheduling gain by allocating the sub-carriers on which a specific UE experiences the best
radio channel conditions. Since this scheduling mode requires associated signalling
(resource allocation signalling, measurement reporting in uplink), this mode would be best
suited for non-real time, high data rate oriented services. In the localized resource allocation
mode a user is allocated continuous blocks of sub-carriers.
The second resource allocation mode or "distributed mode" relies on the frequency diversity
effect to achieve transmission robustness by allocating resources that are scattered over
time and frequency grid. The fundamental difference with localized mode is that the
resource allocation algorithm does not try to allocate the physical resources based on some
knowledge on the reception quality at the receiver but select more or less randomly the
resource it allocates to a particular UE. This distributed resource allocation method seems to
be best suited for real-time services as less associated signalling (no fast measurement
reporting, no fast allocation signalling) relative to "localized mode" is required.
The two different resource allocation methods are shown in Fig. 1 for an OFDMA based
radio access scheme. As can be seen from the left-hand part of Fig. 1, which depicts the
localized transmission mode, the localized mode is characterized by the transmitted signal
having a continuous spectrum that occupies a part of the total available spectrum. Different
symbol rates (corresponding to different data rates) of the transmitted signal imply different
bandwidths (time/frequency bins) of a localized signal. On the other hand, as can be seen
from the right-hand part of the figure, distributed mode is characterized by the transmitted
signal having a non-continuous spectrum that is distributed over more or less the entire
system bandwidth (time/frequency bins).
Measurement Reporting
As a common example for uplink measurement reporting we will describe Channel Quality
Reporting in this section. As already mentioned above, when allocating resources in the
downlink to different users in a cell, the scheduler takes information on the channel status
experienced by the users for the sub-carriers into account. Channel quality information
(CQI), the control information signalled by the users, allows the scheduler to exploit the
multi-user diversity, thereby increasing the spectral efficiency.
CQI is used in a multi-user communication system to report the quality of channel
resource(s). Apart from aid in a multi-user scheduler algorithm in the MAC layer on the
network side this information may be used to assign channel resources to different users, or
to adapt link parameters such as employed modulation scheme, coding rate, or transmit
power, so as to exploit the assigned channel resource to its fullest potential.
A channel resource may be defined as a "resource block" as shown in Fig. 2 assuming a
multi-carrier communication system, e.g. employing OFDM. In order to have information on
the "quality" of this resource block, measurement of the channel quality have to be taken in
the receiving side. An exemplary solution for this is to perform a measurement of the Signal-
to-Noise-plus-lnterference Ratio (SINR) using reference symbols provided by the
transmitting side. However, quality reports are not limited to this and could also contain other
types of measurement like a Block Error Rate (BLER) or even UE capabilities like decoder
complexity or RF improvements. Examples of different CQI compression formats resulting in
different CQI reporting types are given in the document "3GPP TSG-RAN WG1 Meeting
#46bis, TDoc R1-062808, 09 - 13 October 2006, Seoul, Korea". The signalling flow between
the network (eNodeB) and the UE for CQI reporting is depicted in Fig. 3.
Assuming that the smallest unit can be assigned or adapted according to the above, in the
ideal case CQI for all resource blocks for all users should be always available. However, due
to constrained capacity of the feedback channel, this is most likely not feasible. The
feedback channel resources available for CQI is limited and these resources have to be
shared among all reporting UEs.
Therefore, reduction techniques are required, so as to transmit for example CQI information
only for a subset of resource blocks for a given user. One possibility is to report only the
strongest resource blocks. Furthermore, different transmission techniques as described in
the section above related to OFDM require also different forms of CQI reports. As already
described above, Fig. 1 depicts downlink transmissions in distributed and localized mode.
Both transmission methods require different CQI reports. The localized mode needs a
quality report exactly on the bandwidth fraction used for the transmission to the specific UE,
whereas the distributed mode needs information on the whole bandwidth (which would
probably be reduced to an average overall value of e.g. SINR due to the resource
constraints as discussed above)
Depending on the variability of the channel conditions experienced, the network can decide
to configure an UE with different periodicity for CQI reporting. In case of a slowly changing
channel, a reduced reporting frequency saves uplink resources on the physical uplink
control channel (PUCCH). Intervals are typically in a range of 2 ms to 160 ms and depend
on how often channel conditions need to be reported in order to be able to decide on the
scheduling as described above. If the networks decides that the reported information is too
infrequent or too often, it will reconfigure the corresponding UE with a new reporting
periodicity. Thus, the PUCCH parameters are configured by the network individually for each
UE that is reporting CQI.
When UEs reporting measurements, e.g. CQI, not only report a single type of report but
provide different types of reports in the same allocated resources, this could, allow the
network to e.g. make a decision for switching from distributed to localized mode downlink
transmission or vice versa. For making such a decision, the network however needs
measurement information for both modes. There is therefore a need for a method allowing
the network to reliably identify which type of content each measurement report contains.
Due to resource constraints on the feedback channel, measurement reports are kept as
redundancy free as possible so that it is difficult for the network to detect the measurement
report types blindly.
Summary of the Invention
An object of the present invention is to provide a method for configuring a measurement
report type to be used by a receiver to report a quality of a channel over which the receiver
receives channel resources from a transmitter such that the measurement report type of
each measurement report can be reliably identified by the transmitter.
The main idea of the invention is to provide methods for the network side in order to allow
UEs to transmit measurement reports of different measurement reporting types where
resources for measurement reporting on the feedback channel are assigned to each UE and
these resources are distributed between the different measurement reports such that the
receiving side in the network exactly knows which measurement report type it receives.
An embodiment of the invention provides a method for configuring a measurement report
type to be used by a receiver to report a measurement to a transmitter, wherein the
measurement is reported to the transmitter in a report signal over a control channel, said
method comprising selecting a first measurement report type and at least one second
measurement report type to be used by the receiver to report the measurement, generating
a measurement reporting pattern defining an occurrence of the first measurement report
type and the at least one second measurement report type in the report signal transmitted
by the receiver to the transmitter over the control channel, and notifying the first
measurement report type, the at least one second measurement report type, and the
generated measurement reporting pattern to the receiver.
Another embodiment of the invention provides a method for configuring a measurement
report type to be used by a receiver to report a measurement to a transmitter, wherein the
measurement is reported to the transmitter in a report signal over a control channel, said
method comprising selecting a first measurement report type and at least one second
measurement report type to be used by the receiver to report the measurement, configuring
a first measurement reporting process defining an occurrence of the first measurement
report type in the report signal, configuring at least one second measurement reporting
process defining an occurrence of the at least one second measurement report type in the
report signal, and notifying the first measurement report type, the at least one second
measurement report type, the configured first measurement reporting process, and the at
least one second measurement reporting process to the receiver.
Another embodiment of the invention provides a method for reporting a measurement to a
transmitter, wherein the measurement is reported to the transmitter in a report signal over a
control channel, said method comprising receiving a notification from the transmitter about a
first measurement report type and at least one second measurement report type to be used
to report the measurement, and about a measurement reporting pattern defining an
occurrence of the first measurement report type and the at least one second measurement
report type in the report signal, determining a first measurement information according to the
first measurement report type and at least one second measurement information according
to the at least one second measurement report type, multiplexing the determined first and
the at least one second measurement information according to the notified measurement
reporting pattern, thereby obtaining a multiplexed signal, and transmitting the multiplexed
signal to the transmitter.
Another embodiment of the invention provides a method for reporting a measurement to a
transmitter, wherein the measurement is reported to the transmitter in a report signal over a
control channel, said method comprising receiving a notification from the transmitter about a
first measurement report type and at least one second measurement report type to be used
to report the measurement, and about a first measurement reporting process defining an
occurrence of the first measurement report type in the report signal, and at least one second
measurement reporting process defining an occurrence of the at least one second
measurement report type in the report signal, determining a first measurement information
according to the first measurement report type and at least one second measurement
information according to the at least one second measurement report type, multiplexing the
determined first and the at least one second measurement information according to the
notified first measurement reporting process and the at least one second measurement
reporting process, respectively, thereby obtaining a multiplexed signal, and transmitting the
multiplexed signal to the transmitter.
Another embodiment of the invention provides a transmitter, comprising receiving means for
receiving from a receiver over a control channel a report signal on a measurement, selecting
means for selecting a first measurement report type and at least one second measurement
report type to be used by the receiver to report the measurement, generating means for
generating a measurement reporting pattern defining an occurrence of the first
measurement report type and the at least one second measurement report type in the report
signal transmitted by the receiver to the transmitter over the control channel, and notifying
means for notifying the first measurement report type, the at least one second measurement
report type, and the generated measurement reporting pattern to the receiver.
Another embodiment of the invention provides a transmitter, comprising receiving means for
receiving from a receiver over a control channel a report signal on a measurement, selecting
means for selecting a first measurement report type and at least one second measurement
report type to be used by the receiver to report the measurement, configuring means for
configuring a first measurement reporting process defining an occurrence of the first
measurement report type in the report signal, and at least one second measurement
reporting process defining an occurrence of the at least one second measurement report
type in the report signal, and notifying means for notifying the first measurement report type,
the at least one second measurement report type, the configured first measurement
reporting process, and the at least one second measurement reporting process to the
receiver.
Another embodiment of the invention provides a receiver, comprising transmitting means for
transmitting to a transmitter over a control channel a report signal on a measurement,
receiving means for receiving a notification from the transmitter about a first measurement
report type and at least one second measurement report type to be used to report the
measurement, and about a measurement reporting pattern defining an occurrence of the
first measurement report type and the at least one second measurement report type in the
report signal, determining means for determining a first measurement information according
to the first measurement report type and at least one second measurement information
according to the at least one second measurement report type, and multiplexing means for
multiplexing the determined first and the at least one second measurement information
according to the notified measurement reporting pattern, thereby obtaining a multiplexed
signal, wherein the receiver is further adapted to transmit the multiplexed signal to the
transmitter.
Another embodiment of the invention provides a receiver, comprising transmitting means for
transmitting to a transmitter over a control channel a report signal on a measurement,
receiving means for receiving a notification from the transmitter about a first measurement
report type and at least one second measurement report type to be used to report the
measurement, and about a first measurement reporting process defining an occurrence of
the first measurement report type in the report signal, and at least one second measurement
reporting process defining an occurrence of the at least one second measurement report
type in the report signal, determining means for determining a first measurement information
according to the first measurement report type and at least one second measurement
information according to the at least one second measurement report type, and multiplexing
means for multiplexing the determined first and the at least one second measurement
information according to the notified first measurement reporting process and the at least
one second measurement reporting process, respectively, thereby obtaining a multiplexed
signal, wherein the receiver is further adapted to transmit the multiplexed signal to the
transmitter.
Brief Description of the Drawings
Fig. 1 Localized (left) and distributed (right) resource allocation of resource blocks for data
transmission;
Fig. 2 Visualisation of used terms and symbols;
Fig. 3 Signal flow for measurement reporting between an eNodeB and a UE for the
particular example of channel quality reporting;
Fig. 4 Examples of a measurement reporting pattern for a) two measurement report types
and b) more than two measurement report types;
Fig. 5 Multiplexing of measurement reports using a measurement reporting pattern to
distinguish between different measurement reports;
Fig. 6 Multiplexing of measurement reports by configuring different measurement reporting
processes;
Fig. 7 Code-multiplexing of measurement reports;
Fig. 8 Information Elements necessary for measurement reporting
configuration/reconfiguration message; and
Fig. 9 Information Elements necessary for measurement reporting process message.
Detailed description of the Invention
In the following, the invention is described in more detail in reference to the attached figures
and drawings. Similar or corresponding details in the figures are marked with the same
reference numerals.
The invention describes a method for configuring an uplink measurement report type to be
used by a receiver to report a measurement, e.g. a quality of a channel over which the
receiver receives channel resources from a transmitter. The measurement is reported by the
receiver to the transmitter in a report signal over a control channel. The receiver may send a
first measurement report type and at least one second measurement report type, which are
sent to the transmitter over the control channel.
According to an embodiment of the invention, in order to enable the receiver to send various
measurement report types that are reliably distinguishable in the transmitter on the network
side, the network not only configures the reporting interval, as presented in the prior art
section, but additionally configures explicitly which measurement report type is to be sent by
the receiver at each reporting occurrence.
This can be done by extending the configuration with a measurement reporting pattern that
contains mapping information between the measurement reporting occurrences and each
measurement report type. In case of n measurement reports, the mapping information
indicates for each measurement report the type of each of these reports.
Fig. 4 illustrates two examples of measurement reporting patterns, depending on the
number of different measurement report types that may be sent by the receiver. The first
measurement reporting pattern illustrated in Fig. 4 a) configures eight consecutive reporting
events to report two different measurement report types. The first measurement report is of
type 1, the following seven measurement reports are of type 0. For encoding such a
reporting scheme, a binary pattern is sufficient. Hence, Fig. 4 a) represents a bit pattern,
which defines the occurrence of two measurement report types in the measurement report
signal to be transmitted by the receiver.
However, should there be more than two reporting types to be used, these have to be made
distinguishable by using more than one bit for each measurement report type. Hence, Fig 4
b) represents a measurement reporting pattern using decimal values for measurement
report types. In this example, a further measurement report type is defined, which is referred
as type 2.
According to an embodiment of the invention, the mapping of reporting events and
measurement report types is such that each possible measurement report type is assigned
to a unique predetermined measurement report type number. This allows the receiver to
know in advance which measurement report type is to be used when receiving the
measurement reporting pattern.
A receiver configured with the measurement reporting pattern shown in Fig. 4 a) transmits a
measurement report signal as shown in Fig. 5. As in the prior art systems, there exists a
single periodicity between two measurement reporting events, where the first measurement
report is of type 1, which is represented with horizontal lines, and the following seven
measurement reports are of type 0, which is represented with vertical lines. After the eighth
measurement report, the pattern will be repeated. This results in a multiplexing of the two
measurement report types.
The procedure described above will continue until measurement reporting is stopped (e.g.
by explicit control message by either RRC or MAC from the network side) or the receiver,
e.g. a UE, gets reconfigured by the transmitter, e.g. the eNodeB of the network, with a new
measurement reporting pattern.
All measurement reports of one UE can thus be configured in a single control message that
includes the reporting types used, the reporting periodicity, the reporting pattern and
optionally the reporting duration, where the latter Information Element (IE) would save a
message in order to explicitly stop measurement reporting. The necessary lEs for a Channel
Quality Report are exemplarily described in Fig. 8, which shows a table that does not
contain all lEs possible for the measurement reporting message, but only those relevant to
the invention.
Another embodiment of the invention, which provides a further improvement of the method
according to the invention, will be now be described with respect to Fig. 6. In the previously
described embodiment, the introduction of an additional measurement report type or the
removal of an existing measurement report type from a UE requires that this specific UE has
to be reconfigured with a new measurement reporting pattern. Hence, this requires including
the full measurement reporting pattern when reconfiguring the uplink measurement
reporting. According to this embodiment of the invention, measurement reporting processes
are defined instead of the use of a measurement reporting pattern.
A control message from the network configuring a measurement reporting process includes
a measurement process ID, a measurement report type, a measurement reporting
periodicity and an optional reporting duration. A measurement reporting process message
configures only a single measurement reporting process. The lEs for this message are
represented for the particular example of channel quality reporting in Fig. 9. The parameter
designated therein as CQI feedback cycle represents the measurement reporting periodicity.
The configuration described above results in the same measurement reporting behavior as
described with respect to the previously embodiment and illustrated in Fig. 5. The
measurement reporting procedure according to this embodiment of the invention is depicted
in Fig. 6, where two measurement reporting processes are configured. The first
measurement reporting process, which is represented with vertical lines, has a reporting
periodicity of 10 ms, whereas the second measurement reporting process, which is
represented with horizontal lines, has a reporting periodicity of 80 ms.
Should it be the case that more than one measurement reporting process is scheduled for
the same reporting occurrence, the measurement reporting process with the largest
reporting periodicity has the highest priority and overrides all the other measurement
reporting processes possessing a shorter reporting periodicity. In the example in Fig. 6, the
second reporting process thus overrides the first reporting process. This results in the
multiplexed measurement reporting scheme which is identical to the one described in Fig. 5.
This embodiment of the invention provides the advantage that for reconfiguration of the
reporting for one UE only new or discontinued measurement processes need to be
addressed for adding or removing, while existing and continuing measurement processes do
not need to be included in the reconfiguration message. In general, this would result in a
smaller size of the reconfiguration message when compared to the previously described
embodiment.
A further optimization of this embodiment for the case that two or more measurement
configuration processes are configured or reconfigured at the same time consists in
combining their configuration messages into a single RRC message, thus reducing the
amount of messages that need to be sent.
Yet another embodiment of the invention, which provides a further improvement of the
method according to the invention, will now be described with respect to Fig. 7. In this
embodiment, the two measurement reports from the previous embodiment illustrated in Fig.
6, i.e. the first reporting process with a reporting periodicity of 10 ms and the second
reporting process with a reporting periodicity of 80 ms, are now multiplexed in the code
domain.
Each measurement reporting process is assigned to a specific code, for example a specific
cyclic shift of a cyclic code, and each report is encoded with this specific code. Should two
or more measurement reports happen at the same reporting occurrence, they are sent
simultaneously, thus resulting in a measurement report signal as shown in Fig. 7, where the
first and second measurement report are code-multiplexed at the same reporting
occurrence.
The configuration of this embodiment is similar to the previously described embodiment with
the difference that each measurement reporting process needs to be assigned a unique
code. The benefit of this embodiment is that sending more than one measurement reporting
process does not affect the time frequency/resources assigned to measurement reporting.
Another embodiment of the invention relates to the implementation of the above described
various embodiments using hardware and software. It is recognized that the various
embodiments of the invention may be implemented or performed using computing devices
(processors). A computing device or processor may for example be general purpose
processors, digital signal processors (DSP), application specific integrated circuits (ASIC),
field programmable gate arrays (FPGA) or other programmable logic devices, etc. The
various embodiments of the invention may also be performed or embodied by a combination
of these devices.
Further, the various embodiments of the invention may also be implemented by means of
software modules, which are executed by a processor or directly in hardware. Also a
combination of software modules and a hardware implementation may be possible. The
software modules may be stored on any kind of computer readable storage media, for
example RAM, EPROM, EEPROM, flash memory, registers, hard disks, CD-ROM, DVD,
etc.
In the previous paragraphs various embodiments of the invention and variations thereof
have been described. It would be appreciated by a person skilled in the art that numerous
variations and/or modifications may be made to the present invention as shown in the
specific embodiments without departing from the spirit or scope of the invention as broadly
described.
It should be further noted that most of the embodiments have been outlined in relation to a
3GPP-based communication system and the terminology used in the previous sections
mainly relates to the 3GPP terminology. However, the terminology and the description of the
various embodiments with respect to 3GPP-based architectures is not intended to limit the
principles and ideas of the inventions to such systems.
Also the detailed explanations given in the Technical Background section above are
intended to better understand the mostly 3GPP specific exemplary embodiments described
herein and should not be understood as limiting the invention to the described specific
implementations of processes and functions in the mobile communication network.
Nevertheless, the improvements proposed herein may be readily applied in the architectures
described in the Technological Background section. Furthermore the concept of the
invention may be also readily used in the LTE RAN currently discussed by the 3GPP.
CLAIMS
1. Method for configuring a measurement report type to be used by a receiver to
report a measurement to a transmitter, wherein the measurement is reported to
the transmitter in a report signal over a control channel, said method comprising
the following steps executed by the transmitter:
selecting a first measurement report type and at least one second measurement
report type to be used by the receiver to report the measurement,
generating a measurement reporting pattern defining an occurrence of the first
measurement report type and the at least one second measurement report type
in the report signal transmitted by the receiver to the transmitter over the control
channel, and
notifying the first measurement report type, the at least one second
measurement report type, and the generated measurement reporting pattern to
the receiver.
2. The method according to claim 1, further comprising notifying a reporting
frequency to the receiver defining the frequency of the occurrence of the
measurement reports transmitted in the report signal.
3. The method according to claim 1 or 2, further comprising receiving from the
receiver a multiplexed signal comprising measurement information, and
de-multiplexing the multiplexed signal according to the measurement reporting
pattern.
4. The method according to claim 3, further comprising:
distinguishing in the received measurement information first measurement
information according to the first measurement report type from at least one
second measurement information according to the at least one second
measurement report type based on the measurement reporting pattern, and
modifying a data transmission property based on the distinguishing result.
5. The method according to claim 4, wherein the data transmission property
comprises at least one of a data rate, a modulation scheme, a MIMO mode, and
a radio resource allocation.
6. The method according to one of claims 1 to 5, wherein the measurement
reporting pattern comprises mapping information between an occurrence time in
the report signal and each measurement report type.
7. The method according to one of claims 1 to 6, wherein a measurement report
type is associated to a predetermined measurement report type number.
8. The method according to one of claims 1 to 7, wherein one second measurement
report type is selected, and the generated measurement reporting pattern is a bit
pattern, wherein a high bit of the bit pattern is associated to one of the first
measurement report type and the second measurement report type, and a low bit
of the bit pattern is associated to the other one of the first measurement report
type and the second measurement report type.
9. The method according to claim 8, further comprising receiving from the receiver a
signal comprising measurement information, and
distinguishing in the received measurement information first measurement
information according to the first measurement report type from second
measurement information according to the second measurement report type
based on the bit pattern.
10. The method according to one of claims 1 to 9, wherein the measurement report
type is a channel quality report type to be used by the receiver to report a quality
of a channel over which the receiver receives channel resources from the
transmitter, wherein the quality of the channel is reported to the transmitter in the
report signal over the control channel.
11. Method for configuring a measurement report type to be used by a receiver to
report a measurement to a transmitter, wherein the measurement is reported to
the transmitter in a report signal over a control channel, said method comprising
the following steps executed by the transmitter:
selecting a first measurement report type and at least one second measurement
report type to be used by the receiver to report the measurement,
configuring a first measurement reporting process defining an occurrence of the
first measurement report type in the report signal,
configuring at least one second measurement reporting process defining an
occurrence of the at least one second measurement report type in the report
signal, and
notifying the first measurement report type, the at least one second
measurement report type, the configured first measurement reporting process,
and the at least one second measurement reporting process to the receiver.
12. The method according to claim 11, further comprising notifying to the receiver, for
the first measurement reporting process, a first reporting frequency defining the
frequency of the occurrence of the first measurement report type in the first
measurement reporting process, and, for the at least one second measurement
reporting process, at least one second reporting frequency defining the frequency
of the occurrence of the at least one second measurement report type in the at
least one second measurement reporting process.,
13. The method according to claim 11 or 12, further comprising assigning a
respective code to each one the first measurement reporting process and the at
least one second measurement reporting process, and
notifying each respective assigned code to the receiver.
14. The method according to one of claims 11 to 13, wherein the measurement
report type is a channel quality report type to be used by the receiver to report a
quality of a channel over which the receiver receives channel resources from the
transmitter, wherein the quality of the channel is reported to the transmitter in the
report signal over the control channel.
15. Method for reporting a measurement to a transmitter, wherein the measurement
is reported to the transmitter in a report signal over a control channel, said
method comprising the following steps executed by the receiver:
receiving a notification from the transmitter about a first measurement report type
and at least one second measurement report type to be used to report the
measurement, and about a measurement reporting pattern defining an
occurrence of the first measurement report type and the at least one second
measurement report type in the report signal,
determining a first measurement information according to the first measurement
report type and at least one second measurement information according to the at
least one second measurement report type,
multiplexing the determined first and the at least one second measurement
information according to the notified measurement reporting pattern, thereby
obtaining a multiplexed signal, and
transmitting the multiplexed signal to the transmitter.
16. The method according to claim 15, further comprising receiving a reporting
frequency from the transmitter defining the frequency of the occurrence of the
measurement reports in the report signal, wherein the first and the at least one
second measurement information are multiplexed at the received reporting
frequency.
17. The method according to claim 15 or 16, wherein the measurement report type is
a channel quality report type used by the receiver to report a quality of a channel
over which the receiver receives channel resources from the transmitter, wherein
the quality of the channel is reported to the transmitter in the report signal over
the control channel.
18. Method for reporting a measurement to a transmitter, wherein the measurement
is reported to the transmitter in a report signal over a control channel, said
method comprising the following steps executed by the receiver:
receiving a notification from the transmitter about a first measurement report type
and at least one second measurement report type to be used to report the
measurement, and about a first measurement reporting process defining an
occurrence of the first measurement report type in the report signal, and at least
one second measurement reporting process defining an occurrence of the at
least one second measurement report type in the report signal,
determining a first measurement information according to the first measurement
report type and at least one second measurement information according to the at
least one second measurement report type,
multiplexing the determined first and the at least one second measurement
information according to the notified first measurement reporting process and the
at least one second measurement reporting process, respectively, thereby
obtaining a multiplexed signal, and
transmitting the multiplexed signal to the transmitter.
19. The method according to claim 18, further comprising receiving from the
transmitter, for the first measurement reporting process, a first reporting
frequency defining the frequency of the occurrence of the first measurement
report type in the first measurement reporting process, and, for the at least one
second measurement reporting process, at least one second reporting frequency
defining the frequency of the occurrence of the at least one second measurement
report type in the at least one second measurement reporting process, wherein
the first and the at least one second measurement information are multiplexed at
the highest received reporting frequency.
20. The method according to claim 18 or 19, wherein, when an occurrence of the first
measurement report type and one of the at least one second measurement
report type substantially coincide with each other in the report signal, the one of
the first measurement reporting process and the at least one second
measurement reporting process having the lowest reporting frequency has
priority.
21. The method according to claim 18 or 19, further comprising receiving from the
transmitter a respective code assigned to each one the first measurement
reporting process and the at least one second measurement reporting process,
wherein the determined first and second measurement information are code-
multiplexed according to the assigned respective codes.
22. The method according to one of claims 18 to 21, wherein the measurement
report type is a channel quality report type used by the receiver to report a quality
of a channel over which the receiver receives channel resources from the
transmitter, wherein the quality of the channel is reported to the transmitter in the
report signal over the control channel.
23. A transmitter, comprising:
receiving means for receiving from a receiver over a control channel a report
signal on a measurement,
selecting means for selecting a first measurement report type and at least one
second measurement report type to be used by the receiver to report the
measurement,
generating means for generating a measurement reporting pattern defining an
occurrence of the first measurement report type and the at least one second
measurement report type in the report signal transmitted by the receiver to the
transmitter over the control channel, and
notifying means for notifying the first measurement report type, the at least one
second measurement report type, and the generated measurement reporting
pattern to the receiver.
24. The transmitter according to claim 23, further comprising means for executing the
method steps according to one of claims 2 to 10.
25. A transmitter, comprising:
receiving means for receiving from a receiver over a control channel a report
signal on a measurement,
selecting means for selecting a first measurement report type and at least one
second measurement report type to be used by the receiver to report the
measurement,
configuring means for configuring a first measurement reporting process defining
an occurrence of the first measurement report type in the report signal, and at
least one second measurement reporting process defining an occurrence of the
at least one second measurement report type in the report signal, and
notifying means for notifying the first measurement report type, the at least one
second measurement report type, the configured first measurement reporting
process, and the at least one second measurement reporting process to the
receiver.
26. The transmitter according to claim 25, further comprising means for executing the
method steps according to one of claims 12 to 14.
27. A receiver, comprising:
transmitting means for transmitting to a transmitter over a control channel a
report signal on a measurement,
receiving means for receiving a notification from the transmitter about a first
measurement report type and at least one second measurement report type to
be used to report the measurement, and about a measurement reporting pattern
defining an occurrence of the first measurement report type and the at least one
second measurement report type in the report signal,
determining means for determining a first measurement information according to
the first measurement report type and at least one second measurement
information according to the at least one second measurement report type, and
multiplexing means for multiplexing the determined first and the at least one
second measurement information according to the notified measurement
reporting pattern, thereby obtaining a multiplexed signal,
wherein the receiver is further adapted to transmit the multiplexed signal to the
transmitter.
28. The receiver according to claim 27, further comprising means adapted to execute
the method steps according to claim 16 or 17.
29. A receiver, comprising:
transmitting means for transmitting to a transmitter over a control channel a
report signal on a measurement,
receiving means for receiving a notification from the transmitter about a first
measurement report type and at least one second measurement report type to
be used to report the measurement, and about a first measurement reporting
process defining an occurrence of the first measurement report type in the report
signal, and at least one second measurement reporting process defining an
occurrence of the at least one second measurement report type in the report
signal,
determining means for determining a first measurement information according to
the first measurement report type and at least one second measurement
information according to the at least one second measurement report type, and
multiplexing means for multiplexing the determined first and the at least one
second measurement information according to the notified first measurement
reporting process and the at least one second measurement reporting process,
respectively, thereby obtaining a multiplexed signal,
wherein the receiver is further adapted to transmit the multiplexed signal to the
transmitter.
30. The receiver according to claim 29, further comprising means adapted to execute
the method steps according to one of claims 19 to 22.

The present invention describes a method for configuring a measurement report type to be used by a receiver to report
a measurement to a transmitter, wherein the measurement is reported to the transmitter in a report signal over a control channel, said
method comprising selecting a first measurement report type and at least one second measurement report type to be used by the
receiver to report the measurement, generating a measurement reporting pattern defining an occurrence of the first measurement
report type and the at least one second measurement report type in the report signal transmitted by the receiver to the transmitter over
control channel, and notifying the first measurement report type, the at least one second measurement report type, and the generated
measurement reporting pattern to the receiver.